30" x 30"
PLASTIC SHEET
955-7224
WARRANTY
(5/1) CARD
940-7670
IRS SIGMA,
OWNERS MANUAL,
930-7400
SETUP
INSERT SHT
930-7948
FOAM, TOP
951-7057
FOAM,
BOTTOM
951-7058
00202
CLOTH
SHEETING
990-7169 (2)
MICROFOAM
951-2830 (4)
CLOTH
SHEETING
990-7169 (2)
MICROFOAM
951-2830 (4)
IRS SIGMA
CARTON
946-7369
Technical Manual
IRS Sigma
Infinity Systems, Inc. 250 Crossways Park Dr., Woodbury, New York 11797
07/00
+
SR2
1.0 ohms
5 WATTS
SR1
1.1O ohms
5 WATTS
SW1
+
FLAT
-
SR4
1.20 ohms
5 WATTS
SR6
1.10 ohms
5 WATTS
SR3
1.20 ohms
5 WATTS
SR5
1.10 ohms
5 WATTS
SW2
FLAT
-
SR7
1.00 ohm
15 WATTS
-
+
-
+
SW3A
+
-
SW3B
+
-
B
A
+
-
Mid/Twt PCB
Mid/Twt PCB
-
MIDBASS
WOOFER
SECTION
00203
HIGH
FREQUENCY
INPUT
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
l
Nominal Impedance:
4
9
l
Max Amp Power
500 watts*
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Frequency Response
30 Hz - 42,000Hz (
E
2dB)
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Sensitivity:
87dB (1 watt @ 1 meter)
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Crossover Frequency:
160Hz, 600Hz, 3800Hz
SYSTEM COMPONENTS:
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Cabinet
IRS Sigma (Not for Sale)
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Front Grille, w/logo
A026-7280
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Lower Rear Grille
A026-7354
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Upper Rear Grille
A026-7086
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Low-Frequency Transducer:
12”(304mm) Woofer (902-7502),
330709-001
DC Resistance
3.7 ohms
E
10%
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Mid-Bass Transducer:
6 1/2”(165mm)Mid-Bass Coupler
(902-7379)
DC Resistance
3.6 ohms
E
10%
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Mid Frequency Transducer:
Neodymium Emim
(902-5339A)
DC Resistance
3.7 ohms
E
10%
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High-Frequency Transducer (2):
Emit-B Neodymium
(902-5228)
DC Resistance
3.9 ohms
E
10%
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Crossover Network
Input Assembly (A017-7399)
Woofer Network/Board (A015-7398)
Mid-Bass PCB (A020-7397)
Tweeter/Midrange PCB (A020-7396)
AURAL SWEEP TEST SPECIFICATIONS:
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System Aural Sweep Test
6.0V Input 30 Hz to 42 kHz
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L.F. Aural Sweep Test
6.0V Input 30 Hz to 500 Hz
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M.B. Aural Sweep Test
5.0V Input 100 Hz to 1 kHz
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M.F. Aural Sweep Test
4.0V Input 500 Hz to 4 kHz
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H.F. Aural Sweep Test
2.83V Input 3 kHz to 42 kHz
PHYSICAL SPECIFICATIONS:
l
Enclosure dimensions:
58
1/4
” x 18
1/2
” x 16-
1/4
” (H x W x D)
(1422 x 457 x 406mm)
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Weight
195 lbs (88.6 kg) Each
WARRANTY:
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Refer to Warranty Statement packed with each product.
* The maximum recommended amplifier power rating will ensure prop-
er system headroom to allow for occasional peaks. We do not recom-
mend sustained operation at these maximum power levels.
PACKING
SWITCHBOARD PCB
SCHEMATIC
IRS
Sigma
All manuals and user guides at all-guides.com
all-guides.com
